Which sentence about potato famine is objective

a: it was wrong for the english to export all of ireland's healthy crops

b: almost 1 million irish people died during the potato famine

c: the poor irish must have been hungry, miserable, and afraid

d: the irish potato famine is a terrible period in western history

the correct answer is b

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

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